TCF Fellbach (2021).010
03/21
VP60 Analogue / IO-Link
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the specifications given in this document.
Note:
The actuator system (= position controller of the valve spool) is activated from a supply voltage of 21 V. Although the average
current consumption (at 24 V over 10 seconds is limited to 0.6 A and is reversibly reduced to 0.2 A if exceeded, peaks of up to
1.5 A can occur. This must be taken into account when designing the analogue supply.
In the IO-Link version, the supply voltage of the valve actuator is ensured via a second channel. The valve is therefore
connected via port class B. This must be taken into account when selecting a suitable master.
Note:
Power supply units often have an electronic current limiter, the activation of which results in a reduction of the output voltage.
As a result, the switch-off threshold of the actuator of the VP60 of 18 V can be undershot. Due to the then drastically reduced
current requirement of the valve (~0.08 A), the power supply unit voltage rises again above the switch-on threshold. Possibly
an undesired oscillation process is created in this way!
Attention!
Supply voltages > 32 V DC can permanently damage the internal overvoltage protection.
Since the VP60 enables the actuator from approx. 21 V, a voltage range of 21 to 32 V is specified. However, once the switch-on
threshold has been exceeded, operation is guaranteed until the switch-off threshold of approx. 18 V is undershot.
This hysteresis (~3V) prevents the above mentioned oscillations if the power supply is designed correctly. Any ripples present
(nominally 10% Ub = max. 2.4 V) must be smaller than this hysteresis in order for the VP60 to operate properly.
